Autotrophic and mixotrophic growth of Gallionella ferruginea

Hallbeck, Lotta; Pedersen, Karsten

doi:10.1099/00221287-137-11-2657

Cited by 159 publications

(108 citation statements)

References 14 publications

(9 reference statements)

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“…They are known to be prevalent in groundwater systems and mineral springs (Hanert, 2006) and are capable of both autotrophic and mixotrophic growth (Hallbeck and Pedersen, 1991). Sideroxydans spp.…”

Section: Discussionmentioning

confidence: 99%

Chemolithotrophic nitrate-dependent Fe(II)-oxidizing nature of actinobacterial subdivision lineage TM3

et al. 2013

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Anaerobic nitrate-dependent Fe(II) oxidation is widespread in various environments and is known to be performed by both heterotrophic and autotrophic microorganisms. Although Fe(II) oxidation is predominantly biological under acidic conditions, to date most of the studies on nitrate-dependent Fe(II) oxidation were from environments of circumneutral pH. The present study was conducted in Lake Grosse Fuchskuhle, a moderately acidic ecosystem receiving humic acids from an adjacent bog, with the objective of identifying, characterizing and enumerating the microorganisms responsible for this process. The incubations of sediment under chemolithotrophic nitratedependent Fe(II)-oxidizing conditions have shown the enrichment of TM3 group of uncultured Actinobacteria. A time-course experiment done on these Actinobacteria showed a consumption of Fe(II) and nitrate in accordance with the expected stoichiometry (1:0.2) required for nitratedependent Fe(II) oxidation. Quantifications done by most probable number showed the presence of 1 Â 10 4 autotrophic and 1 Â 10 7 heterotrophic nitrate-dependent Fe(II) oxidizers per gram fresh weight of sediment. The analysis of microbial community by 16S rRNA gene amplicon pyrosequencing showed that these actinobacterial sequences correspond to B0.6% of bacterial 16S rRNA gene sequences. Stable isotope probing using 13 CO 2 was performed with the lake sediment and showed labeling of these Actinobacteria. This indicated that they might be important autotrophs in this environment. Although these Actinobacteria are not dominant members of the sediment microbial community, they could be of functional significance due to their contribution to the regeneration of Fe(III), which has a critical role as an electron acceptor for anaerobic microorganisms mineralizing sediment organic matter. To the best of our knowledge this is the first study to show the autotrophic nitrate-dependent Fe(II)-oxidizing nature of TM3 group of uncultured Actinobacteria.

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Section: Discussionmentioning

confidence: 99%

Chemolithotrophic nitrate-dependent Fe(II)-oxidizing nature of actinobacterial subdivision lineage TM3

et al. 2013

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“…Clone 221, a possible iron oxidizer, had a highest blast hit of 97% sequence identity with an uncultured bacterium from a reactor system treating monochlorobenzene-contaminated groundwater (AY050584; Alfreider et al, 2002). Clone 221's highest sequence identity to a cultured species was 93% to Gallionella ferruginae (L07897; Hallbeck and Pedersen, 1991;Hallbeck et al, 1993). Clone 212 could be assigned to the family Incertae cedis 5, but not to the genus Leptothrix, although it had 95% sequence identity to L. discophora strain-1 (L33975; Siering and Ghiorse, 1996).…”

Section: Enrichment Of Dms-degrading Bacteriamentioning

confidence: 99%

“…However, the stalk is not present under all conditions (Hallbeck et al, 1993). This microorganism has the ability to obtain carbon from both organic compounds and through CO 2 fixation (Hallbeck and Pedersen, 1991).…”

Section: Introductionmentioning

confidence: 99%

Bacteria associated with iron seeps in a sulfur-rich, neutral pH, freshwater ecosystem

et al. 2008

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The freshwater nature reserve De Bruuk is an iron-and sulfur-rich minerotrophic peatland containing many iron seeps and forms a suitable habitat for iron and sulfur cycle bacteria. Analysis of 16S rRNA gene-based clone libraries showed a striking correlation of the bacterial population of samples from this freshwater ecosystem with the processes of iron reduction (genus Geobacter), iron oxidation (genera Leptothrix and Gallionella) and sulfur oxidation (genus Sulfuricurvum).Results from fluorescence in situ hybridization analyses with a probe specific for the beta-1 subgroup of Proteobacteria, to which the genera Leptothrix and Gallionella belong, and newly developed probes specific for the genera Geobacter and Sulfuricurvum, supported the clone library data. Molecular data suggested members of the epsilonproteobacterial genus Sulfuricurvum as contributors to the oxidation of reduced sulfur compounds in the iron seeps of De Bruuk. In an evaluation of anaerobic dimethyl sulfide (DMS)-degrading activity of sediment, incubations with the electron acceptors sulfate, ferric iron and nitrate were performed. The fastest conversion of DMS was observed with nitrate. Further, a DMS-oxidizing, nitrate-reducing enrichment culture was established with sediment material from De Bruuk. This culture was dominated by dimorphic, prosthecate bacteria, and the 16S rRNA gene sequence obtained from this enrichment was closely affiliated with Hyphomicrobium facile, which indicates that the Hyphomicrobium species are capable of both aerobic and nitrate-driven DMS degradation.

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“…ferrooxidans and Leptospirillum ferrooxidans. However, very soon after the pilot plant was commissioned these bacteria were present either in very low numbers or were not detected, and bacteria related to "Ferrovum myxofaciens" (a more recently described iron-oxidizing acidophile [30]) and the neutrophilic iron-oxidizer Gallionella ferruginea [31] were the dominant bacteria present ( [28,29]). The pH of the ground water was pH 4.9, but following treatment in the bioreactor this declined to pH 3.0 as a result of iron oxidation and precipitation.…”

Section: Ironmentioning

confidence: 99%

Recent Developments in Microbiological Approaches for Securing Mine Wastes and for Recovering Metals from Mine Waters

Johnson

2014

Minerals

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Abstract:Mining of metals and coals generates solid and liquid wastes that are potentially hazardous to the environment. Traditional methods to reduce the production of pollutants from mining and to treat impacted water courses are mostly physico-chemical in nature, though passive remediation of mine waters utilizes reactions that are catalysed by microorganisms. This paper reviews recent advances in biotechnologies that have been proposed both to secure reactive mine tailings and to remediate mine waters. Empirical management of tailings ponds to promote the growth of micro-algae that sustain populations of bacteria that essentially reverse the processes involved in the formation of acid mine drainage has been proposed. Elsewhere, targeted biomineralization has been demonstrated to produce solid products that allow metals present in mine waters to be recovered and recycled, rather than to be disposed of in landfill.

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Autotrophic and mixotrophic growth of Gallionella ferruginea

Cited by 159 publications

References 14 publications

Chemolithotrophic nitrate-dependent Fe(II)-oxidizing nature of actinobacterial subdivision lineage TM3

Chemolithotrophic nitrate-dependent Fe(II)-oxidizing nature of actinobacterial subdivision lineage TM3

Bacteria associated with iron seeps in a sulfur-rich, neutral pH, freshwater ecosystem

Recent Developments in Microbiological Approaches for Securing Mine Wastes and for Recovering Metals from Mine Waters

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